Improvement in sectional steam-generators



J. J. ROEPER. Sectional Stealvm-Gellleratr.

No. 203,197. Patented April 30,?51'878.

n. PETERS. PHOTDLITHQGRAPMER. wASHlNGmN. D. lA

UNITED STATE-1s PATENT OFFICE. y

JOHN J. ROEPER, OF PHILADELPHIA, PENNSYLVANIA.

IMPROVEMENT IN SECTIONAL STEAMfGENERATORS.

Specifi cation forming part of Letters Patent No. 203,197, dated April 30, 1878; application led November 7, 1877.

To all whom it may concern:

Be it known that I, JOHN J. ROEPER, of Philadelphia, Pennsylvania, have invented a new and useful Improvement in Sectional Steam-Generators, of which the following is a specication The main object of my invention is to so construct a sectional steam-generator that free expansion or contraction of each section is permitted without impairing the joints between the adjacent sections. This objectI attain in the manner which l will now proceed to describe, reference being hadto the accompanying drawing, in which- Figure lis a side view of one of the castiron sections of my improved steam-generator; Fig. 2, a sectional plan on vthe line l 2, and Fig. 3 a vertical section ou the line 3 4.

Each section 'is composed of a series of tubes, arranged at right angles to each other, there being, in the present instance, three horizontal tubes, a, a', and a, combined with three vertical tubes, b, b', and b", all being cast in 'one piece.

At one'end of the lower tube a of each section, and communicatin g therewith, is a branch, d, which'has two faces, ff', the distance between the Vlatter being somewhat greater than the width or diameter ofthe tubes, as shown in Fig. 3, so that when the branches d of several sections are fitted together they will form a tube situated at right angles to the tubes of the sections, and the bodies of the sections will be a short distance apart from each other.

Each section has at the top, and preferably in a central position, a hollow cylindrical projection, h, having at each side a circular open .bolts passed through holes m in the projections h and through holes n in the branches d.

each section, as shown in Fig. 2, for obtaining Y increased heating-surface, the end sections of the series being corrugated at -the inner sides only.

It has not been deemed necessary to show a furnace in connection with the generator, as

y a furnace of properconstruetion will readily suggest itself to those skilled in the art.

Owing to the arrangement of vertical and horizontal tubes, there must necessarily be a free circulation of water through everypart of i each section, which must present an extended surface to the products of combustion.

The capacity of the generator may be readily increased by additional sections, and as each section is cast in one piece, the generator must necessarily be a cheap one.

I claim as my invention- A steam-generator composed of sections, each section having l horizontal corrugated pipes, plain verticalpipes, an upper .projection, h, forming part of the steam-drum, a lower projection, d, having a boss on each side, and the said projections of one section being secured to those of the adjoining sections, all as set forth. l

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

JOHN J. ROEPER.

Witnesses RICHARD L. GARDINER, HARRY SMITH. 

